Industry
Quality, electrical and process instrumentation for general discrete and process manufacturing operations.
Manufacturing is the broadest sector represented here, and it is worth treating separately because its instrumentation requirement is driven by the product being made rather than by a process. A plant machining components, one assembling electronics and one blending a liquid product measure entirely different things, and the common thread is that the measurement exists to prove something about the output rather than to keep a reactor stable.
That places the quality question at the centre. Where a measurement releases a product, it carries requirements for repeatability, traceability and a record that survives an audit, and those obligations reach the instrument even though they originate in a customer requirement or a quality standard. Where a measurement only keeps a machine running, the priorities are different again: response, reliability and a clear indication when the reading can no longer be trusted.
The practical dividing line for specifying is therefore not the industry but the consequence of the measurement. Does it control the process, prove the product, or protect the machine? Those three duties justify three different instruments, and most specification errors in this sector come from applying the priorities of one duty to a measurement that belongs to another.
Compressed air, cooling water, steam, gas and general plant services. Standard instrumentation is usually acceptable, and the priorities are reliability and a clear failure indication rather than precision.
Machine monitoring, position sensing, pressure and flow in hydraulic and pneumatic circuits, and temperature control on the machine itself. Response and repeatability matter more than a wide measuring range.
Measurement taken during or beside production to decide whether the part continues or is rejected. Cycle time, fixturing and the pass or fail limit dominate everything else.
Dimensional verification, material testing, hardness and surface checks on samples and finished goods, where the instrument has to satisfy the standard the product is released against.
| Measurement | What is measured in this sector | Instruments commonly specified |
|---|---|---|
| Flow | Compressed air, cooling water, coolant, process liquids, gas and steam across the plant | Electromagnetic and ultrasonic meters for water and coolant, vortex and differential-pressure installations for air and steam, and thermal mass measurement where air consumption is monitored for cost or for leak detection |
| Pressure | Compressed air and hydraulic circuits, process lines, and machine clamping and actuation systems | Transmitters and switches chosen for the duty, with the connection and sealing arrangement matched to the circuit rather than to a general preference |
| Temperature | Machine and bearing temperature, process and coolant temperature, and thermal control of a production step | RTDs where stability is wanted, thermocouples where the duty is fast, and non-contact measurement for moving or inaccessible surfaces |
| Level | Coolant, oil, process tanks and storage silos | Hydrostatic and radar transmitters, plus point switches for protection where an overflow or a dry run has a measurable cost |
| Dimensional and inspection | Component geometry, surface finish, coating and assembly verification | Handheld gauges and indicators for the shop floor, and fixed or fixtured measurement where the same check is repeated on every part |
| Condition monitoring | Vibration, motor current and machine temperature on production equipment | Accelerometers, current sensors and route-based instruments, applied where unplanned downtime has a cost that justifies the installation |
Which of these is appropriate depends on whether the measurement controls the process, proves the product or protects the machine. Stating that in the enquiry usually settles the specification.
Frequently asked
The questions that come up in this sector before an order. If yours is not here, send it with the duty and we will answer it alongside the quotation.
Those that release product, that satisfy a customer requirement, or that a quality system relies on to demonstrate conformity. A measurement used only to keep a machine running does not carry the same obligation, though it still needs to be trustworthy. The practical approach is to list the measurements that feed a release or a report and treat those as controlled, rather than applying the same regime to everything on the plant.
It follows from the consequence of a defect and from the production rate. In-line inspection catches every part but has to keep up with the line and needs a pass or fail limit that can be applied automatically. Laboratory inspection is more thorough and more flexible but samples rather than covers. Many plants run both, using in-line checks to catch gross errors and laboratory work to verify the process itself.
It is a customer restriction on which suppliers may provide equipment for their product, and where one applies it overrides a technical preference. It usually brings a documentation requirement with it, such as certificates, material declarations or a defined test record. Asking whether an approved-vendor list applies is worth doing at the start of an enquiry, because it can remove options that look otherwise suitable.
By deciding what the figure is for: cost allocation between areas, leak detection across a site, or control of a specific process. Thermal mass measurement suits smaller lines and gives a mass figure directly, while differential-pressure and vortex installations suit larger mains. Leak surveys need a portable instrument and a method rather than a permanent installation, so the answer depends entirely on the purpose.
Whatever failure would cost more than the monitoring. Vibration on rotating equipment, motor current on driven machines and temperature on bearings and gearboxes cover most of it, and route-based measurement with a portable instrument is often enough where the machines are accessible. Permanent monitoring is justified where the failure is expensive or the machine is hard to reach, not as a default.
What the measurement is for, whether it releases product, the range and the cycle time, the environment at the machine, the method of presenting the part to the instrument, and any customer or quality-system documentation requirement. Where an approved-vendor list or a customer specification applies, say so at the start, because it shapes the answer more than the technical details do.
Published products
DL-16 · Industrial Data Loggers Reference listing
Standalone multi-channel data logger recording temperature, voltage and current inputs at programmable intervals, with internal memory and network export.
DMM-600 · Digital Multimeters Reference listing
True RMS benchtop digital multimeter for voltage, current, resistance, capacitance and continuity, with a CAT III safety rating and data logging output.
DPM-48 · Panel Meters Reference listing
Panel-mounted digital indicator accepting 4-20 mA, voltage or RTD input, with programmable scaling and relay outputs for local alarm duty.
DVC-150 · Digital Calipers Reference listing
Stainless steel digital caliper with a capacitive encoder, 0.01 mm resolution and four measurement functions, in hardened and hardened stainless construction.
IPS-M18 · Proximity Sensors Reference listing
Non-contact inductive sensor detecting ferrous and non-ferrous metal targets, with an M18 barrel body, PNP or NPN output and a shielded or unshielded sensing face.
LHT-200 · Hardness Testers Reference listing
Handheld rebound hardness tester for metals, converting the result to Rockwell, Brinell and Vickers scales, for use on large or installed parts.
PLC-X20 · PLC Systems Reference listing
Compact programmable logic controller with integral digital and analog I/O, expandable by modules, with Ethernet and serial communication.
SLM-30 · Noise Meters Reference listing
Class 2 integrating sound level meter measuring sound pressure level and equivalent continuous level, with A and C weighting and octave analysis.
Send the process conditions and the standard you have to meet, and we will confirm the instrument, availability and documentation that can accompany the order.
Request for quotation
Send the technical detail and we will confirm availability, lead time and terms. In-stock items ship within 48 hours; customized specifications typically take 2-10 days. Minimum order quantity is 1 pc.